Platform structure of 3D printer

Abstract

A platform structure of 3D printer includes a movable platform (1), a work carrier (2), an electromagnet (3) and a positioning structure (4). Either of the movable platform (1) and the work carrier (2) has a magnetically attractable portion (20). The electromagnet (3) is installed on another of the movable platform (1) and the work carrier (2) and is capable of magnetically attracting the MAP (20) to make the work carrier (2) removably connect to the movable platform (1). The positioning structure (4) includes a first positioning portion (41) formed on the movable platform (1) and a second positioning portion (42) formed on the work carrier (2). The first positioning portion (41) and the second positioning portion (42) engage with each other. Thereby, the platform structure (10) is convenient to use and has a function of fast assembling and dissembling the work carrier (2).

What is claimed is: 
     
       1. A platform structure of a 3D printer, comprising:
 a movable platform ( 1 ); 
 a work carrier ( 2 ), either one of the movable platform ( 1 ) and the work carrier ( 2 ) having a magnetically attractable portion ( 20 ); and 
 an electromagnet ( 3 ), installed on the other one of the movable platform ( 1 ) and the work carrier ( 2 ), and being capable of magnetically attracting the magnetically attractable portion ( 20 ) to make the work carrier ( 2 ) removably connect downward to the movable platform ( 1 ); 
 wherein when the electromagnet ( 3 ) is activated and the work carrier ( 2 ) is put on the movable platform ( 1 ) by a robot hand, the electromagnet ( 3 ) magnetically is configured to attract the magnetically attractable portion ( 20 ) to install the work carrier ( 2 ) on the movable platform ( 1 ), and when the electromagnet ( 3 ) is stopped to eliminate magnetic attraction, the work carrier ( 2 ) is separated or removed from the movable platform ( 1 ), thereby a function of assembling and dissembling the work carrier ( 2 ) with the movable platform ( 1 ) is achieved; 
 wherein the movable platform ( 1 ) is dented at a front side ( 16 ), and a wall ( 12 ) extends upward from each of a left side ( 13 ), a right side ( 14 ) and a rear side ( 15 ), except the front side ( 16 ) of the movable platform ( 1 ), for being configured to provide the robot hand to take the work carrier ( 2 ) from the front side ( 16 ) as the electromagnet ( 3 ) is stopped to eliminate the magnetic attraction; an opening ( 121 ) is formed at each of both walls ( 12 ) of the left side ( 13 ) and the right side ( 14 ), and a protrudent block ( 221 ) is formed on each of two sides of a surrounding surface ( 22 ) of the work carrier ( 2 ) to engage with the opening ( 121 ) so as to make the work carrier ( 2 ) positioned on the movable platform ( 1 ) through fitting of the surrounding surface ( 22 ) with the wall ( 12 ) and a secured engagement of the protrudent block ( 221 ) and the opening ( 121 ), the work carrier ( 2 ) together with the movable platform ( 1 ) is moved under a dynamic operation of the robot hand as the electromagnet ( 3 ) is activated. 
 
     
     
       2. The platform structure of the 3D printer of  claim 1 , wherein the electromagnet ( 3 ) is fixed to the movable platform ( 1 ), and the work carrier ( 2 ) is made of a magnetically attractable material.